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The role of magnetic order in VOCl

Title data

Ekholm, Marcus ; Schönleber, Andreas ; van Smaalen, Sander:
The role of magnetic order in VOCl.
In: Journal of Physics: Condensed Matter. Vol. 31 (May 2019) Issue 32 . - No. 325502.
ISSN 1361-648X
DOI: https://doi.org/10.1088/1361-648x/ab1eff

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

VOCl and other transition metal oxychlorides are candidate materials for next-generation rechargeable batteries. We have investigated the influence of the underlying magnetic order on the crystallographic and electronic structure by means of density functional theory. Our study shows that antiferromagnetic ordering explains the observed low-temperature monoclinic distortion of the lattice, which leads to a decreased distance between antiferromagnetically coupled V–V nearest neighbors. We also show that the existence of a local magnetic moment removes the previously suggested degeneracy of the occupied levels, in agreement with experiments. To describe the electronic structure, it turns out crucial to take the correct magnetic ordering into account, especially at elevated temperature.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 02 Sep 2020 06:17
Last Modified: 02 Sep 2020 06:17
URI: https://eref.uni-bayreuth.de/id/eprint/56702